摘要
基于无单元法模拟水力开裂的优越性,文中结合断裂力学理论进行了应用无单元法模拟水力劈裂的研究。首先探讨了水力作用的施加,其次给出了水力劈裂准则和开裂追踪方法,然后应用修正J积分法计算应力强度因子,编制了水力劈裂模拟的无单元法程序,最后应用该程序对一算例进行了计算。结果表明所介绍的方法和程序合理可行,为岩体水力劈裂模拟提供了可靠的手段。
Based on the advantage of element-free method to simulate hydraulic fracturing, the study is made on the simulation of hydraulic fracturing of rock mass in combination with the theory of facture mechanics herein; in which the imposition of hydraulic pressure is discussed, and then a criterion for hydraulic fracturing and a method for tracing crack propagation are presented, furthermore, the modified method of j-integral is used to calculate the stress intensity factor and an element-free program for simulating hydraulic fracturing is complied as well. Finally, the program is applied to the calculation on an actual case. The results show that the method and program presented herein are not only reasonable and feasible, but also provide a reliable method to simulate the hydraulic fracturing of rock mass.
出处
《水利水电技术》
CSCD
北大核心
2010年第1期22-25,共4页
Water Resources and Hydropower Engineering
基金
国家自然科学基金资助项目(50809059)
关键词
岩石力学
水力劈裂
无单元法模拟
开裂追踪
rock mechanics
hydraulic fracturing
simulation with dement-free method
crack propagation tracing
